TW526477B - A/V data recording device and method, and the disk recording with the same - Google Patents

Abstract

The present invention provides an A/V data recording device and method, which can reduce the searching operation to the minimum even using UDF file system. The A/V data recording method has the file management information, which treats the continuous blocks on the disk as the extent for management, and groups the extents as files for management. The present invention is characterized by creating new directories on the disk, and protecting the distributed extents as the reserved regions for recording file management information.

Description

526477 j. · A7 _______ B7____ 5. Description of the Invention (i) [Technical Field] The present invention relates to an AV data recording device and method suitable for recording and reproducing AV data such as digital portraits. [Background Art] In recent years, with the increase in the density of optical discs, recording media designed for digital images including moving images have been developed for the use of optical discs. It has a wide range of applications, not only in the peripheral equipment of computers, but also in home video recorders. It is expected that it will replace cassette media as the recording medium for video recording in the future. In order to perform common data processing in the above-mentioned wide application range, data is generally managed in logical units called archives. As a related file management method, there is a file system using a format according to the UDF (Universal Disk Format) standard. The UDF standard is stipulated to ensure media compatibility among various computer operating systems (OS), and is also adopted in DVD-Video devices for consumer appliances. The following describes the structure of a file system that uses the UDF standard (hereinafter referred to as "UDF file system") while referring to the drawings. Fig. 35 shows an example of the structure of a data recording and reproducing apparatus using a conventional AV data recording method. In FIG. 35, 101 denotes a magneto-optical disc, and 102 denotes a recording medium driving section. For example, when the disc 101 is a magneto-optical disc, the recording medium driving section 102 is composed of a spindle motor or the like. Make up. 103 refers to the recording / reproducing department. For example, when the disc 1 is optical and magnetic, 3 paper rule national standard (cns) A4 specification (21〇X 297 mm) " I— (Please read the back first (Notes for filling in this page)

A7 j 发 26477. 丨 _! _B7_ V. Description of the invention (/) At the time of a compact disc, the recording / reproducing section 103 was composed of an optical head, a magnetic head, a servo circuit, and a modem. Reference numeral 104 denotes a memory unit, which temporarily stores data during recording and reproduction of the data. Reference numeral 105 denotes a disc drive unit, and is composed of a disc 101, a recording medium drive section 102, a recording / reproducing section 103, and a memory section 104. 106 indicates the AV signal processing unit, which performs processing such as MPEG compression on the AV input signal input from a CCD camera or the like, or performs MPEG decoding on the AV data read from the disc 101. Then output to a monitor, etc. Further, 107 is a display system control section for controlling the AV signal processing section 106 and the disc drive unit 105. In the data recording / reproducing device configured as described above, the AV signal input to the AV signal control processing unit 106 during data recording is subjected to image compression processing such as the MPEG method, and is controlled by the system control unit 107. Transfer to the memory section 104. Next, the system control unit 107 operates the recording medium drive unit 102 and the recording / reproducing unit 103 to record data on the memory unit 101 on the disc 101. When the data is reproduced, the system control unit 107 operates the recording medium driving unit 102 and the recording / reproducing unit 103 to transfer the data recorded on the disc 101 to the memory unit 104. Next, under the control of the system control unit 107, the data is read from the memory unit ⑺1, and output as an AV signal from the AV signal processing unit 106 (please read the precautions on the back before filling this page)-binding. · Line. 1 This paper size applies to China National Standard (CNS) A1 (21〇χ Norwegian public love)

Next, a configuration example of a UDF file system using a conventional file management method will be described with reference to the drawings. FIG. 36 is a structural diagram of a capacity space of a UDF formed in the disc 101. FIG. In Figure 36, in order to use the disc 10 as a logical capacity, the disc 10 is divided into units called magnetic zones, and the magnetic zone is allocated from 0 (zero) to The logical sector number (LSN) of the last logical sector (Last LSN). In addition, a capacity structure is recorded in a front end portion and a terminal portion in the capacity space. In addition, among these capacity structures, a partition (Partiation) space in which the file structure information or user data is recorded is allocated. In FIG. 38, a directory DIR1 exists under the ROOT directory, and FILE-1 and FILE-2 exist under the directory DIR1. At this time, in FIG. 37, blank bit map descriptors are recorded at LBN = 0 to 79. The blank bitmap descriptor is a blank bitmap to indicate whether or not a name block can be allocated. Each element of the blank bit mapping corresponds to each logical block. When this bit is '1', it indicates that the logical block is in the unallocated state, and when it is '0', it indicates that it is in the allocated state. In LBN40, the file set descriptor (File Set DescnptoO) is recorded. In the file set descriptor, the location information of the file entry of the root directory is recorded. The file entry will be detailed later. The terminal description is recorded in LBN41 The terminal descriptor refers to the terminal of the file set descriptor row. The file entry of the root directory is recorded in LBN42. The so-called file entry 5 (please read the precautions on the back before filling this page) -t · ·- The paper size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (21 × X 297 mm) A7 526477 ^ _ _B7__ V. Description of the invention) File Entry is used to store information about various attributes inherent in each file or file. Information such as record location and file size is used to manage files by extent groups. The range will be described in detail later. Figure 39 shows an example of the structure of the file entry. In the Descriptor Tag Filed, in the partition space, information of various descriptors used to judge a blank bit map descriptor, a file descriptor, and a file entry is recorded. If it is a file entry, it is determined by the description 261. In the ICB (Information Control Block) marker column, attribute information about the file entry itself is recorded. The extended attribute column is used to describe attribute information other than that specified in the attribute information column in the file entry. The configuration descriptor column only records the required number of configuration descriptors. These configuration descriptors manage the area of consecutive logical blocks into a range. Fig. 40 shows the structure of a configuration descriptor. The range in the configuration descriptor is expressed by the range length and range position. Figure 41 shows the interpretation of the upper 2 bits of the range length contained in the configuration descriptor. The allocation status and recording status of the range are indicated by the upper 2 bits. When 値 is '0' (zero), it means that the allocation is complete and the completion range is recorded, that is, the data of the file is recorded. When 値 is '1', it indicates that the allocation is complete and the range is not recorded, that is, the area has been allocated as a specific file / directory but no data is recorded. When 値 is '3', it indicates the next range of the configuration descriptor. The configuration descriptor column in the file entry can record a plurality of configuration descriptors, and the clusters in the range managed by these configuration descriptors will constitute a file. The scope of this type of file is said to be 6 paper sizes applicable to the Chinese National Standard (CNS) A4 (210 X 297). (Please read the back of vS; the precautions before filling out this page) • Epilepsy-line — ^ _-- — · '5264π, A7 ______B7_ 5. Description of the invention (() \ y Main data stream, which stores user data. In the directory, record the file name of the file contained in the file And its file entry. As far as UDF is concerned, the directory is also a type of file, which is recorded in LBN = 83 or LBN = 85 in Figure 37. An example of the structure of the directory file recorded at LBN = 85 is shown in Figure 42. The directory file is composed of a plurality of file identification descriptors, and each file identification descriptor has information about each file contained in the file. The main information held by each file identification descriptor is the corresponding file The file name is based on the location information of its file entry. Figure 43 shows an example of the logical structure of the directory / file in the file management information according to the UDF specification. In Figure 43, the file set descriptor is recorded in the partition space Come in a predetermined position It is a part of the file management information. The record location of the file entry for the ROOT directory file is stored in the file set descriptor. The file identification record of the directory DIR_1 is stored in the file identification descriptor in the ROOT directory file. There are multiple file identification descriptors in the DIR_1 file, which respectively store the file names of FILE1_1 and FILE1_2 and the record locations of the file entries. Also, in the UDF, the file entry can be replaced by the extended file entry. Figure 44 An example of the structure of the extended file entry is shown in the figure. In terms of UDF specifications, the descriptor mark field of the extended file entry is determined by the description "266". The extended file entry has a Stream Directory ICB (Stream Directory ICB). ) Column is different from the aforementioned file entry. The stream entry ICB stores the bit of the file entry called the stream directory to describe the special directory. 7 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling out this page) -Packing—line 52647 $!… A7 _____B7_ V. Invention (I :) Set the information. Figure 45 shows an example of the structure of a stream directory. The stream directory is also a type of directory file. It is composed of a plurality of file identification descriptors, like a general directory file. However, the stream directory The file identification descriptor is different from ordinary directory files in that it is designated to correspond to a special file called a named data stream. In addition, as far as the stream directory is concerned, it does not mean a parent directory, but a meaning. Refers to the main data stream as the mother entrance. The named data stream also constitutes a data stream by expanding the cluster managed by the configuration descriptor in the file entry. Therefore, the file managed by the extended file entry is composed of a main data stream, a named data stream of 0 or more. Fig. 46 shows an example of the logical structure of the directory / file when the extended file entry is used in accordance with the UDF specification. In FIG. 46, the relationship between the file set descriptor, the ROOT directory, the directory DIR-1, the file FILE1J, and the file FILE1_2 is the same as that in FIG. 43. However, in Figure 46, there is a difference in replacing the file entry with an extended file entry. In Fig. 46, the recording location of the file entry of the stream directory is stored in the stream directory ICB column of the extended file entry. A plurality of file identification descriptors are stored in the stream directory file, and the names of named_stream_l and named_stream_2 and the record position of the extended file entry are stored, respectively. In Figure 46, the directory DIR1 is the directory file of the main data stream, applicable to 8 dimensions & national standard (CNS) A4 specification (210 X 297 mm) " " (Please read the precautions on the back before (Fill in this page) Λ Order · i-line 52 Hey I ", A7 _ _B7___ V. Description of the invention (1) The three data streams named_stream_l and named_stream_2 form a file. The following describes the operation of the data recording / reproducing device to read out the required files from the disc having the structure of the UDF file system. Here, a description will be given of an operation when a recording position of a destination file is to be obtained in a case where the hierarchical structure shown in Fig. 43 is obtained. Here, the file FILE_1 is designated as the destination file. First, read the contents of the ROOT directory file. That is, the position of the file entry of the ROOT directory is obtained from the file set descriptor by referring to it. Then, read the configuration descriptor from the file entry to obtain the position and length of the range of the ROOT directory file, and read out the data of the ROOT directory file. By scanning the data of the ROOT directory file, the file identification descriptor corresponding to the destination directory name DIR1 can be detected. Next, read the contents of the destination directory file. That is, if a file identification descriptor consistent with the destination directory is detected, the position information of the file entry can be obtained from the content of the file descriptor, and the file entry can be read at the same time. Read the configuration descriptor from the file entry of the directory to obtain the position and length of the range recorded there, and read the data of the directory file. Finally, the data of the file in the directory DIR1 read from the file to be read is scanned to detect the file identifier descriptor that is consistent with the target. If a file identification descriptor that is consistent with the destination directory is detected, the position information of the file entry can be obtained from the file identification descriptor, and the file entry can be read at the same time. Then, read the configuration descriptor from the file entrance to obtain the position and length of the range recorded there, and read the destination file at the same time. 9 The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ( Please read the precautions on the back before filling this page) -t ·. -Line A7 526477 ____B7____ V. Description of the Invention (^) FILE1_1. Next, the operation of recording data on the data recording device in a disc having a structure of a UDF file system will be described. The situation described here is a further recording of FILE_3 under the directory DIR1 with respect to a disc 'having a partition space as shown in FIG. 37. First, the blank bit map is scanned to obtain the undivided logic block with a state of Γ. For the unallocated state logic blocks, they are recorded as the data of FILE1-3. When the §5 record of the range ends, it means the file entry of FILE_3 for the unallocated logical block record. At this time, the position information or range length indicating the range of FILE1-3 is recorded in the file entry only as a necessary number as a configuration descriptor. A file identification descriptor of FILE1_3 is recorded in the file of the directory DIR1 of the parent directory of FILE1_3. In this file identification descriptor, the file name of FILE1-3 and the location information of the file entry are recorded. The bit in the blank bitmap corresponding to the magnetic zone that has been allocated by the above processing is set to "0" (zero), and the allocation is completed. The result of the above processing and the logical capacity space are shown in Fig. 47. Also, the order of processing the file management information is not particularly limited in the above example, and may be performed in other orders. The following describes the operation of a named data stream required for reading data from a disc having a UDF file system structure. This operation will be described in a case where the hierarchical structure shown in Fig. 46 is used to obtain the position information of the destination named data stream. In Figure 46, the __10 paper is sized to the Chinese National Standard (CnS) A4 specification (210 X 297 mm). (Please read the precautions on the back before filling this page) J ^ T ·. _Line- 526477 ^ Ά / Β7 _ ^ ^ V. Description of the invention q) named_stream_l is the data stream for the purpose. The directory DIR1 of the parent entry of the named data stream named_stream_l reads the file entry as described above. The stream directory ICB is read from the extended file entry of the directory DIR1 to obtain the extended file entry of the stream directory recorded there. Then, the configuration descriptor is read from the above-mentioned extended file entry to obtain the position and length of the range of the stream directory, and the data of the stream directory file is read out at the same time. The information of the stream directory obtained by scanning can be detected. The name of the named data stream corresponding to the destination namecLstreamJ is the same as the file identification descriptor. 0 The position information of the extended file entry is obtained from the content of the above file identification descriptor, and the extended file entry is read out at the same time. The configuration descriptor is read from the extended file entry related to the named data stream to obtain the position and length of the range recorded there, and the data of the destination named data stream named_stream__l is also read out. Recording of named streams is performed in the same way as recording of archives. However, the identification descriptor in the record position of the extended file entry where the named data stream is stored is different in that it is recorded in the directory file of the stream directory. Also, the order of processing of the named data stream is not particularly limited in the above example, and may be performed in other orders. However, the file management method using the UDF described above has the following problems. That is, in the case of UDF, the directory is recorded as a file in the partition space ', and the file entry is also recorded in the partition space. Therefore, this __ 11 i paper size is applicable to @ 家 标准 (CNS) A4 specification (21Q x 297 public love) 1 '(Please read the precautions on the back before filling this page) f · ·' Line-526477 A7 ______B7____ 5. Description of the invention (Please read the notes on the back before filling this page) Some catalogue files and file entrances may be distributed on the disc. Therefore, when it is desired to read out all the files under a certain disc, if the directory file and the file entrance are in a dispersed state, a search operation with respect to the disc will frequently occur. For example, in Figure 47, this is the case. The separate file entries of FILE1_1, FILE1-2, and FILE1_3 are in a distributed configuration, so the search action is indispensable when reading out. If the file to be reproduced is an AV file or other such file that requires real-time reproduction, there may be difficulties in real-time reproduction due to the search operation. … Similarly, when real-time recording such as an AV file is required, a search operation for a disc will also occur when recording the file entry after recording the AV file itself, and the AV data recording will stop during this time. The same problem also occurs when you want to record and view a large number of still image image files that have been compressed by JPEG. In addition, during the operation of the device, although it is thought that all the file management information is read into the memory and temporarily stored in the memory to reduce the number of searches for the disc, as a result, many search actions will still occur at this time, and the operation costs time. Furthermore, since the required memory capacity cannot be predicted in advance, it will be difficult to construct a system that efficiently allocates computer resources. [Disclosure of the invention] The present invention is a product obtained to solve the above problems, and its purpose is to provide an AV data recording device and method, which can reduce the search action to a minimum even if a UDF file system is used. The AV data recording device of the present invention for achieving the above-mentioned object is characterized in that it includes a recording and reproduction unit for recording AV data on the disc. 12 This paper size is applicable to the Chinese National Standard (CNS) A4 standard (210 X 297) (Mm) 526477, A /; _B7_ V. Description of invention (j I) material, or reproduction of recorded AV data; and 'System Control Department' is used to control recording and reproduction methods; Continuous blocks on the disc are managed as ranges), file management information (groups of ranges are managed as files), and directory information (groups of files are managed as directories), which are used to record directories Information, file management information, a part of the file, and the reservation range of at least one of the entire file. According to the constitution, even if UDF is used, the recorded file-file management information will not be scattered in the disc. However, the occurrence of the disc search operation can be reduced to a minimum. High-speed, high-reliability recording. In addition, by setting the reservation range to be completed, it is possible to prevent other information from being recorded therein. In this specification, the "range management information" means a placement descriptor. The "directory information" means a directory file composed of a plurality of file identification descriptors. Each file description identifier refers to each file contained in the directory, and has a file name, location information of the file entry, and the like. The so-called "file management information" refers to a file entry or an extended file entry. Furthermore, the so-called "part of a file" refers to the range of at least one of the files made up of more than one range managed by the file entry or extended file entry. On the other hand, the so-called "archive of files" means all the ranges in a file that are made up of one or more ranges managed by the file entry or the extended file entry. Also, the so-called "reservation range" refers to the range recorded in the directory where the AV file or the AV reservation area management file is recorded or managed by the AV reservation area. 13 This paper standard applies to the national standard (CNS) A4 standard (21〇x 297 mm) '" " (Please read the notes on the back before filling this page)-Binding.-Thread = 526477 L 入; λ7 ~ ______B7 V. Description of the invention (fl) The continuous area guaranteed by the management file AV reservation area. In the AV data recording device of the present invention, it is desirable that at least the information on the reserved range be recorded in advance on the disc to manage the position and capacity on the disc. The reason is that it is easy to know the area on the disc that is secured as the reservation range. In particular, in a disc-like replaceable medium, the position and capacity of a reserved range secured by a specific data recording / reproducing device can be easily obtained by other data recording / reproducing devices. Further, in the AV data recording device of the present invention, it is desirable to secure the reserved range by the allocated completion range. The reason is that by setting the reservation range to completion of allocation, it is possible to prevent the recording of other information. Furthermore, the AV data recording device of the present invention ensures that the reserved area is desired by recording the file management information of the file in advance. The reason is that it is not necessary to scan the unrecorded area during file recording, which can reduce the search action. Furthermore, the AV data recording apparatus of the present invention is desirable to record attribute information about the AV file in a reserved area when recording a file on a disc. This is because special reproduction such as fast forward reproduction and fast reverse reproduction can be easily performed, as well as reproduction at a specified time. Further, in the AV data recording apparatus of the present invention, it is desirable that the attribute information about the AV file forms a part of the AV file. The reason is that, when the attribute information is stored in the AV file, it is easy to perform special reproduction and reproduction at a specified time. In addition, in the AV data recording device of the present invention, the attribute information about the AV file is a part or all of the file that is different from the AV file. 14 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297) (%) (Please read the precautions on the back before filling in this page) -f · Order ·-Line 526477 A7 —.__ J_B7_ V. Description of Invention (ί 3) Hope. The reason is that, in the case where the attribute information is stored in a file other than the AV slot case, special reproduction and reproduction at a specified time can be easily performed. In the AV data recording device of the present invention, it is desirable that the AV file is an MPEG transport stream, and the attribute information about the AV file recorded in the reserved range includes time mapping information of the transport stream. This is because special reproduction such as fast forward reproduction and fast reverse reproduction can be easily performed, and reproduction at a specified time can be easily performed. -The so-called "time map information" is information corresponding to the playback time and recording position of the AV stream. For example, it has a hierarchical data structure composed of two tables called a time map and a VOBU table. Further, in the AV data recording device of the present invention, it is desirable that the AV file is an Exif image file, and attribute information about the AV file recorded in the reserved range contains additional Exif information including a part of the Exif image file. The reason is that because the additional information includes thumbnail information about the AV file represented by the thumbnail information, etc., the thumbnail information or the thumbnail file can be reproduced at high speed by simply reading the attribute information recorded in the reserved area. For other Exif extensions. Also, the "AV data recording device of the present invention will record at least one of file management information, a part of a file, and a whole file of a file created in a sub-directory hierarchy when a new sub-directory is created under the directory." It is desirable to ensure a new appointment range. The reason is that the same effect can be expected when recording in a subdirectory. Also, the AV data recording device of the present invention is newly created in the catalog _____ 15 papers x Wii ")--(Please read the precautions on the back before filling this page) -t · · -line A7 526477 l-^ B7 -—— ————: .. ..'... 一 '. —------ V. Description of the Invention (Chongqing) When recording a directory, record the directory information and file management of the subdirectory in the reserved range. At least one of Yinxun, a part of the archive, and the entire archive is desirable. The reason is that the same effect can be expected when recording in a subdirectory. Furthermore, the AV data recording device of the present invention detects a defective block in the reserved range while ensuring the reserved range; it is desirable to skip the defective block to record the data when recording data in the reserved range. The reason for this is that 'because it does not impair the continuity of the data recorded in the reserved area, it is possible to perform highly reliable recording. In addition, in the AV data recording device of the present invention, when recording data on a disc, if the remaining capacity of the reserved range area ensured in advance is insufficient, a new reserved range different from the reserved range is recorded on the disc to record the data. It is hoped. The reason is that by minimizing the search operation, it is possible to prevent the recording and reproduction of AV data from being stopped. In the AV data recording device of the present invention, when a thumbnail file containing thumbnail information about an AV file is recorded on a disc, it is desirable to record the thumbnail file in a reserved range. The reason is that even if a large-capacity thumbnail file containing a plurality of image data is displayed, since a search operation does not occur, high-speed display is possible. Secondly, in order to achieve the above-mentioned purpose, the AV data recording method of the present invention has a process of recording an AV file on a disc or reproducing the recorded AV file; and a process of controlling the recording and reproduction method; having: Scope management information (contiguous blocks on the disc are managed as ranges), file management information (range clustering is managed as files), and directory 16 (please read the precautions on the back before you fill out this page) Order--The size of the paper is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm). Fragrant :, j 一 / .... Γ. &Quot; ί Α / .f_— I____B7__ 5. Description of the invention (^) Information (management of file clustering as a directory); it is characterized by ensuring a reservation range of an area for recording at least one of directory information, file management information, a part of the file, and the entire file. According to the above structure, even when UDF is used, the file management information of the recorded files will not be scattered and recorded in the disc, and the occurrence of the search operation for the disc can be minimized. Therefore, high-speed High-reliability records. In addition, by setting the reservation range to be completed, it is possible to prevent other information from being recorded therein. .. Also, in the AV data recording method of the present invention, it is desirable that at least the information on the reservation range is recorded in advance on the disc to manage the position and capacity on the disc. The reason is that it is easy to know the area on the disc that is secured as the reservation range. In particular, in a disc-like replaceable medium, the position and capacity of a reserved range secured by a specific data recording / reproducing device can be easily obtained by other data recording / reproducing devices. Furthermore, in the AV data recording method of the present invention, it is desirable to set the reserved range to the allocated completion range. The reason is that by setting the reservation range to completion of allocation, it is possible to prevent the recording of other information. In the AV data recording method of the present invention, it is ensured that the reserved area is desired by recording the file management information of the file in advance. The reason is that it is not necessary to scan the unrecorded area during file recording, which can reduce the search action. In the AV data recording method of the present invention, it is desirable to record attribute information about the AV file in the reserved area when recording the file on the disc. This is because it is easy to perform fast forward regeneration and fast reverse. 17 paper sizes are applicable-China National Standard (CNS) A4 size (210 X 297 public love) '(Please read the precautions on the back before filling this page): · Line. _I_Β7 _____ Friends, invention description ([L) special reproduction, etc., and reproduction at a specified time, etc. In the AV data recording method of the present invention, it is desirable that the attribute information about the AV file forms a part of the AV file. The reason is that, when the attribute information is stored in the AV file, it is easy to perform special reproduction and reproduction at a specified time. In the AV data recording method of the present invention, it is desirable that the attribute information about the AV file is a part or all of the file that is different from the AV file. The reason is that, in the case where the attribute information is stored inside other files than the AV file, special reproduction and reproduction at a specified time can be easily performed. In the AV data recording method of the present invention, it is desirable that the AV file is an MPEG transport stream, and the attribute information about the AV file recorded in the reserved range includes the time mapping information of the transport stream. This is because special reproduction such as fast forward reproduction and fast reverse reproduction can be easily performed, and reproduction at a specified time can be easily performed. Furthermore, in the AV data recording method of the present invention, it is desirable that the AV file is an Exif image file, and the attribute information about the AV file recorded in the reserved range contains additional Exif information including a part of the Exif image file. The reason is that because the additional information contains thumbnail information about the AV file represented by the thumbnail information, etc., simply reading the attribute information recorded in the reservation range can reproduce the thumbnail file or other Exif attachments at high speed. The reason for information. Also, according to the AV data recording method of the present invention, when a new sub-directory is newly created under the directory, the directory information of the sub-directory is recorded in the reservation range, and the file management is performed according to the Chinese National Standard (CNS) A4 specification (210 >). < 297 mm) _ --- (Please read the notes on the back before filling in this page) f · · -line 52647 莽 ^ A7 ------ Jade and invention description (丨 0) Information and files Part of it, and at least one of the entire file is desirable. The reason is that 'the same effect can be expected when recording in a subdirectory. Furthermore, the AV data recording method of the present invention detects a defective block in the reserved range while ensuring the reservation range; it is desirable to skip the defective block to record the data when recording data in the reserved range. The reason is that since the continuity of the data recorded in the reserved area is not impaired, reliable recording can be performed. -Also, in the AV data recording method of the present invention, when recording data on a disc, if the remaining capacity of the reserved range area ensured in advance is insufficient, a new reserved range different from the reserved range is recorded on the disc for recording The information is as expected. The reason is that by minimizing the search operation, it is possible to prevent the recording and reproduction of AV data from being stopped. Furthermore, in the AV data recording method of the present invention, when a thumbnail file containing thumbnail information about an AV file is recorded on a disc, it is desirable to record the thumbnail file in a reserved range. The reason is that even if a large-capacity thumbnail file containing a plurality of image data is displayed, since a search operation does not occur, high-speed display is possible. The same effect can be expected from the disc recorded by the AV data recording apparatus and method of the present invention as described above. [Brief description of the drawings] Fig. 1 is a configuration diagram of an AV data recording device according to the first embodiment of the present invention. Figure 2 is 19 of the AV data recording device according to the first embodiment of the present invention. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) " '-(Please read the precautions on the back before filling (This page) t · 丨 line '5264W ^ 11 A7 _B7___ 5. Description of the invention ([^) The example of the initial directory structure is not shown. Fig. 3 is a diagram showing an example of the initial partition space of the AV data recording apparatus according to the first embodiment of the present invention. FIG. 4 is a flowchart of recording processing of an AV file by the AV data recording apparatus according to the first embodiment of the present invention. Fig. 5 is a diagram showing an example of a partition space after recording of an AV file in the AV data recording apparatus according to the first embodiment of the present invention. Fig. 6 is a diagram showing an example of an initial directory structure of an AV data recording apparatus according to a second embodiment of the present invention. Fig. 7 is an illustration of an initial partition space of an AV data recording apparatus according to a second embodiment of the present invention. Fig. 8 is an illustration showing an initial directory structure of an AV data recording apparatus according to a third embodiment of the present invention. Fig. 9 is an illustration of an initial partition space of an AV data recording apparatus according to a third embodiment of the present invention. Fig. 10 is a diagram showing an example of an AV file structure of an AV data recording apparatus according to a fourth embodiment of the present invention. Fig. 11 is an explanatory diagram of time mapping of an AV data recording apparatus according to a fourth embodiment of the present invention. Fig. 12 is an explanatory diagram of time mapping of an AV data recording apparatus according to a fourth embodiment of the present invention. Fig. 13 is an explanatory diagram of time mapping of an AV data recording apparatus according to a fourth embodiment of the present invention. Figure 14 is 20 of the AV data recording device according to the fourth embodiment of the present invention. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page). Order . -Line 526477 A7 _B7 _ 5. Explanation of the invention () The illustration of the initial partition space. Fig. 15 is a flowchart of recording processing of an AV file by an AV data recording device according to a fourth embodiment of the present invention. FIG. 16 is a diagram illustrating an example of a partition space after an AV file is recorded by an AV data recording device according to a fourth embodiment of the present invention. Fig. 17 is an illustration of a data structure of a still image file of an AV data recording apparatus according to a fifth embodiment of the present invention. Fig. 18 is a diagram showing an example of a data structure of a still image file of an AV data recording apparatus according to a fifth embodiment of the present invention. Fig. 19 is a diagram showing an example of a multiple directory structure of an AV data recording apparatus according to a fifth embodiment of the present invention. Fig. 20 is an illustration showing an initial directory structure of an AV data recording apparatus according to a sixth embodiment of the present invention. Fig. 21 is an illustration of an initial partition space of an AV data recording apparatus according to a sixth embodiment of the present invention. Fig. 22 is a flowchart of recording processing of an AV file by an AV data recording apparatus according to a sixth embodiment of the present invention. Fig. 23 is a diagram showing an example of a directory structure after a subdirectory of the AV data recording device according to the sixth embodiment of the present invention is created. Fig. 24 is a diagram showing an example of a partition space of a subdirectory of an AV data recording device according to a sixth embodiment of the present invention. Fig. 25 is a flowchart of recording processing of an AV file by an AV data recording apparatus according to a sixth embodiment of the present invention. Figure 26 is 21 of the AV data recording device according to the sixth embodiment of the present invention. The paper is of the same size as the Chinese National Standard (CNS) A4 specification (21 × 297 mm). (Please read the precautions on the back before filling in this. (Page) -Installation · -Line 526477 A7 _B7___ V. Invention Description The example of the partition space after the AV file is recorded. (Please read the precautions on the back before filling out this page.) Figure 27 is a flowchart of subdirectory creation processing of the AV data recording device according to the seventh embodiment of the present invention. Fig. 28 is a diagram showing an example of a partition space of a subdirectory of an AV data recording device according to a seventh embodiment of the present invention. Fig. 29 is a flowchart of an AV recording process performed on a subdirectory by the AV data recording apparatus according to the seventh embodiment of the present invention. Fig. 30 is an example of an AV data recording device according to a seventh embodiment of the present invention-an example of a partition space after an AV file is recorded in a subdirectory. Fig. 31 is a diagram showing an example of a directory structure after a subdirectory file of the AV data recording device according to Embodiment 7 of the present invention is created. Fig. 32 is a diagram showing an example of a partition space before the new AV reserved area of the AV data recording device according to the tenth embodiment of the present invention is secured. Fig. 33 is a flowchart of recording processing of an AV file by the AV data recording apparatus according to the tenth embodiment of the present invention. Fig. 34 is a diagram showing an example of the partition space after the new AV reserved area of the AV data recording device according to the tenth embodiment of the present invention is secured. Fig. 35 is a configuration diagram of a conventional AV data recording device. Fig. 36 is a diagram showing an example of a capacity space structure of a conventional AV data recording device. Fig. 37 is an illustration of a partition space of a conventional AV data recording device. Fig. 38 is an illustration showing a directory structure of a conventional AV data recording device. 22 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) A7 526477 __B7__ V. Description of the invention (x \) Figure 39 is an example of the file entry of a conventional AV data recording device. Fig. 40 is a diagram showing an example of a configuration descriptor of a conventional AV data recording device. Fig. 41 is an explanatory diagram of the range length of a conventional AV data recording device. Fig. 42 is a diagram showing an example of the structure of a directory file of a conventional AV data recording device. -Fig. 43 is a diagram showing an example of a hierarchical structure of files in a conventional AV data recording device. Fig. 44 is an illustration of an expansion file entry of a conventional AV data recording device. Fig. 45 is a diagram showing the structure of a stream directory file of a conventional AV data recording device. Fig. 46 is a diagram showing an example of a hierarchical structure of a named data stream of a conventional AV data recording device. Fig. 47 is a diagram showing an example of a partition space after recording by a conventional AV data recording device. [Best Mode for Implementing Invention]

Hereinafter, an AV data recording apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following, a file containing audio data or video data encoded by the MPEG method, JPEG method, or the like is referred to as AV data. The term "disc" used in this specification means, for example, DVD-RAM, MO, DVD-R, DVD-RW, DVD + RW. 23 This paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm). ) " (Please read the precautions on the back before filling this page) -t · Order · Line 526477 A7 -——----- —_Β7 ______ V. Description of the invention (> 7) The entire recording medium has a disc shape. (Embodiment 1) Figure 1 is a block diagram of an AV data recording apparatus according to Embodiment 1 of the present invention. In the first figure, 1 represents a disc such as a magneto-optical disc, and 2 represents a drive unit for a recording medium. For example, when the disc is a magneto-optical disc, the 'recording medium drive unit 2 is a spindle motor, etc. Made up. Reference numeral 3 denotes a recording / reproducing section. For example, when the disc 1 is a magneto-optical disc, the recording / reproducing section 3 is constituted by an optical head, a magnetic head, a servo circuit, a modem, and the like. 4 indicates the memory part, and temporarily stores the data during the recording and reproduction of the data. 5 denotes a disc drive unit, and is constituted by a disc 1, a recording medium drive section 2, a recording / reproducing section 3, and a memory section 4. In addition, 6 refers to the AV signal processing unit, which performs processing such as MPEG compression on the AV input signal input from a ccd camera or the like, or performs MPEG decoding on the AV data read from the disc media. 'Then output to the monitor and so on. The 7-series display system control section is used to control the AV signal processing section 6 and the disc drive unit 5. In the AV data recording / reproducing device configured as described above, the AV signal input to the AV signal processing section 6 during data recording is subjected to image compression processing such as the MPEG method, and is controlled by the system control section 7, Transfer to memory section 4. Next, the recording medium drive section 2 and the recording / reproducing section 3 are operated under the control of the system control section 7, and the data on the memory section 4 is recorded on the disc 1. At the time of data reproduction, it is controlled by the system control unit 7 to record 24 paper sizes that are in accordance with the Chinese National Standard (CNS) A4 specification (21〇x 297mm ^) ~ " First (please read the precautions on the back first) Fill out this page again) f · · line 526477 A7 ___— _ B7____ 5. Description of the invention (7 ^) The recording medium drive unit 2 and the recording / reproduction unit 3 transfer the data recorded on the disc 1 to the memory unit 4 . Next, under the control of the system control unit 7, data is read from the memory unit 4 and output as an AV signal from the AV signal processing unit 6. FIG. 2 is an exemplary diagram of a file / directory structure in a state shortly after a directory for recording an AV file is created in the first embodiment. In FIG. 2, the ROOT system enclosed by an oval indicates a root directory, and the AVJDIR1 system indicates a directory in which an AV file has been recorded. -Fig. 3 is a diagram illustrating an example of a data structure of a partition space in a disc used in an AV data recording device according to the first embodiment of the present invention in a state where a file / directory structure shown in Fig. 2 is recorded. In LBN = 0 ~ 79 in FIG. 3, a blank bit mapping descriptor is recorded. In addition, since LBN = 251, it becomes "assigned", and each element corresponding to these magnetic regions is set to "1". Furthermore, a file set descriptor is recorded in LBN = 80. When the file entry is the file entry of the root directory, its location information is recorded in the file set descriptor. A terminal descriptor is recorded in LBN = 81. Furthermore, the entry of the ROOT directory is recorded in LBN = 82, the entry of the ROOT directory is recorded in LBN = 83, and the entry of the directory AVJ3IR1 is recorded in LBN = 84. Secondly, LBN = 85 records the range (1) of the directory file of the directory AV_DIR1. Similarly, the range of LBN = 86 to 250 of the directory AV_DIR1 (2) The upper 2 bits of the 'descriptor descriptor' are set so that the range can be "allocated" and "unrecorded". Therefore, in the previous file system, the paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) -t · Order- • Line 52647: ? A7 ___, __ ^ B7_____ 5. Explanation of the invention (outside) (Please read the precautions on the back before filling this page) In the operation of the system, data cannot be written in LBN = 86 ~ 250. Hereinafter, this range (2) is referred to as an AV reservation area. As described above, since LBN = 0 to 25 has been "allocated", the corresponding bit in the blank bitmap is set to "0" (zero). In the first embodiment, the capacity in the range of "allocation completed" and "unrecorded state" of the directory AV_DIR1 in the initial state of the recording medium is determined in advance. In this way, for the 5 recording / reproducing process of disc 1 not shown in FIG. 4 (step S401 in FIG. 4), it is possible to read the content of -LBN = 0 ~ 250 on disc 1 into the memory The structure on the body 4 can reduce the number of search operations that occur during recording / reproduction. Here, the flow chart of the process of recording the AV file on the disc with the relevant data structure is shown in Figure 4. . If the recording of the AV file is started according to the instruction of the user, in FIG. 4, first, the contents of LBN == 0 ~ 250 on the disc 1 will be read into the memory section 4 (step S401). Next, the information of the AV reserved area on the memory section 4 is scanned to determine the presence or absence of the required number of unrecorded logical blocks on the recorded AV file (step S404). If it is determined that there is no required number of unrecorded logic blocks (step S404: No), an error processing is performed to end the recording of the AV file. If it is determined that there is the above-mentioned logical block, data is recorded for the logical block of the recording medium corresponding to the unrecorded area obtained in step S404 (step S405). After the recording of the AV file data is finished, in order to update the file management information of the AV file, the position and length information of the range of the AV file is recorded in the configuration description in the file entry on the memory unit 4 made in step S403 Symbol (step S406). In addition, in addition to the configuration descriptor, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applicable to 26 paper sizes. 526477- A7 ^ _B7 _ V. Description of the Invention (V5) File identification descriptor and file entry, Also update necessary information such as file name and file creation time. Next, for the blank bit mapping on the memory section 4, the bit corresponding to the logical block of the data recorded in step S405 is changed to "1" indicating "allocation completed" (step S407). Next, the contents of the memory section 4 are written back to the positions of LBN = 0 to 250 on the disc 1 (step S408). If a file is recorded in this way, an AV file will be recorded under the directory AV_DIR1. When you want to record a plurality of AV files in a continuous manner, 'as long as the processing flowchart shown in FIG. 4 is followed by the processing in step S401', until the recording of all AV files is completed, repeat steps S402 to S407. After the recording of all the AV files is completed, the process proceeds to step S408, which means that it is not necessary to write the file identification descriptor and the file entry into the recording medium each time the file is created, which can greatly reduce the number of search operations. According to the processing flowchart shown in FIG. 4, the data structure of the partition space after the FILE1.DAT and FILE2.DAT of the AV file are recorded under the directory AVJDIR1 becomes as shown in FIG. 5. Here, in the AV reservation area, starting from the logical block with a large LBN, it is used for the record of the novel file entry. On the other hand, the file identification descriptor is added to the recording completion range of the directory AV_DIR1 (1) The last form to record. Since both the file identification descriptor and the file entry have a variable-length data structure, it is desirable to start recording the file identification descriptor from the small LBN portion of the AV reservation area and record the file entry from the large LBN portion. When the result of the additional file is added, it is used to describe the file identification in the range (1). 27 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). (Please read the precautions on the back before filling this page. ) t · -line 526m L-A7 —.............. j___B7___ V. Description of the invention < yt) When the capacity is insufficient, as long as the block adjacent to the range (1) is included in the range 修正 in the AV reservation area, the configuration descriptor in the directory AVJDIR1 is modified, and the file descriptor is recorded in this part. However, the addition of the file entry and file identification descriptor for the AV reservation area is not limited to the above order. For example, the AV reservation area can be divided into two areas, and the area with a smaller LBN can be used for the file identification description. The record of the character starts to record the file entry from the beginning of the stub. At this time, 'for example, it is the same as determining the length of the file name of the file to be recorded in advance .... The upper limit of the length of the data recorded on the file identification descriptor is determined in advance to determine the allocation of capacity when the AV reserved area is divided. When a recorded AV file is reproduced using a disc in the recording state shown in Fig. 5, the following procedure is performed. First, as in step 401 shown in FIG. 4, the contents of LBN = 0 to 250 on the disc 1 are read into the memory unit 4. Secondly, scan the recording completion range of the directory AV_DIR1 to obtain the file name existing under the directory AV_DIR1. Secondly, the files are accessed and reproduced in the order described in the prior art. When the next file is to be continuously reproduced, the file identification descriptors and file entries of all files existing in the directory AV_DIR1 are read into the memory section 4. Therefore, in the reproduction of the AV files included in the directory AVJDIR1, the range of the files to be reproduced can be directly accessed without searching for the file entry generated by the conventional method, and high-speed, Files are continuously reproduced. The above-mentioned continuous regeneration can be easily achieved by recording according to the processing sequence shown in FIG. 4. If the recording sequence of the present invention is not used, although the 28 paper sizes are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297) Mm) (Please read the notes on the back before filling out this page)

52640 "j ξ A7. I___Jl____ V. Description of the Invention (1) It is not clear which AV block recorded in the directory AV_DIR1's range is recorded in which logical block of the partition space. Similarly, as shown in Figure 4 Recording in the processing sequence shown will make it easier and faster to read into the memory section 4. Although not using the recording sequence of the present invention, the reading action for the memory section 4 can be achieved 'only' for recording / Too many search actions cannot be avoided at the beginning of the playback operation. The order of recording is not limited to the processing order shown in Figure 4. For example, as described in International Publication No. W098 / 14938, it can also be recorded in actual ~ Before, ensure that multiple consecutive blank areas are registered in the blank bit map as "allocation completion status" before recording actual data. In addition, the update of the configuration descriptor or blank bit mapping information of the directory AV_DIR1 can be performed after the recording of the archive data is completed. The processing for making the data structure of the partition space in the disc into the initial state of FIG. 3 is performed before the recording of the AV file, if necessary. The directory / file name in which the AV file is recorded is not limited to that described in the first embodiment, but may be another directory / file name. In recording and reproduction, LBN = 0 ~ 250 is read into the memory unit 4 ′, but it is not necessary to keep all the information in the memory unit 4. As long as the information required for the recording and reproduction operation is maintained, Only the specific information that needs to be updated is written on the disc 1. Also 'Although LBN = 86 ~ 250 is ensured as the AV reservation area within the range of "allocation completed" and "unrecorded status" of the directory AV-DIR1, 29 (Please read the precautions on the back before filling this page) t · -The size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210 297 mm) A7 _____________________________ (__B7_ V. Description of the invention (j) However, the recording position or capacity of the AV reserved area is not limited to LBN = 〇 ~ 250, as long as it can be ensured as a continuous area on the disc, it can also be other recording locations or capacities. In addition, in this embodiment mode, "the use of the file entry is explained," but the extended file entry can also be used. When using the extended file entry, it is also possible to ensure that the aforementioned AV reservation area is part of the range of the named file stream of the directory AVJDIR1. Also, at this time, the scope constituting the aforementioned AV reservation area may also be regarded as "allocation completed" and "recording completed" (Embodiment 2) Hereinafter, an AV data recording apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings. With respect to the embodiment In one aspect, within the range of "allocation completed" and "unrecorded status" of the directory AVJ3IR1, the file identification descriptor or file entry of the newly recorded AV file is recorded in the second embodiment under the directory AVJDIR1 A management file for storing management information of an AV file, so that the management file has a range of "allocation completed" and "unrecorded status" as its characteristic. Fig. 6 is an AV data record of the second embodiment of the present invention. In the device, an example diagram of the file / directory structure immediately after the directory for recording the AV file is created. The difference from the directory structure shown in Figure 2 is that AVFILES.IFO exists under the directory AV_DIR1 This is where the files are managed. Also, FIG. 7 is an illustration of the data structure of the partition space used to record the directory of the AV file in the recording state. It is recorded in LBN == 0 ～ 79 in FIG. 7 Blank bitmap descriptor. Here, 30 paper sizes are applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

A7 B7 V. Explanation of the invention (> |)

I has become "assigned" since LBN = 251. Each element corresponding to these magnetic regions is set to Γ. A file set descriptor is recorded in LBN == 80. When the file entry is the file entry of the root directory ', the location information is recorded in the file set descriptor. Furthermore, the terminal descriptor is recorded in LBN = 81, the file entry of the ROOT directory is recorded in LBN = 82, the directory file of ROOT is recorded in LBN = 83, and the record is recorded in LBN = 84. The file entry of the directory AV_DIR1 is recorded, and the file entry of the AVFILES.IFO file is recorded in LBN = 85. In addition, LBN = 86 records the range of the directory file of the directory AV_DIR1. LBN = 87 ~ 250 is the range of the AVFILES.IFO file. This range is to set the upper 2 digits of the allocation descriptor in a manner of "allocation completed" and "unrecorded". This area becomes the AV reservation area in the second embodiment. When recording an AV file on a disc having a related data structure, it can be performed in the same manner as the processing sequence shown in FIG. However, it is different in the range of "allocation completed" and "unrecorded" of the AV reservation area where the file identification descriptor and file entry of the new record are managed to be the AVFILES.IFO of the management file. The reproduction of the AV file from the disc on which the AV file is recorded can also be performed in the same manner as in the first embodiment. Also, in the second embodiment, although no data is recorded in the AVFILES.IFO file in the initial state, for example, the related directory AVJDIR1 may be recorded in the initial state. 31 This paper size applies the Chinese National Standard (CNS) A4 specifications (210 X 297 Public Love 1 " (Please read the precautions on the back before filling out this page); t · • line 526477 A7 --- ^ ____ B7 _ — V. Description of the invention), etc., to make it It has a range of "allocation completed" and "unrecorded" and a range of "allocation completed" and "recorded". The range of "allocation completed" and "recording completed" can also be used as the AV reservation area. In addition, in the second embodiment, although the case where the file entry is used is explained, the extended file entry may be used. In addition, when using the extended file entry, the aforementioned AV reservation area may be secured as part of the range of the named data stream of the file AVFILESJFO. Furthermore, at this time, the range constituting the AV reservation area may be regarded as the range of "allocation completed" and "recording completed". In the second embodiment, although the AV reservation area management file is recorded in the same directory as the directory in which the AV file is recorded, the AV reservation area management file may be recorded in another directory. By recording the AV reservation area management file in another directory, it is possible to prevent the management file from being deleted due to the user's operation or other mistakes in advance. (Embodiment 3) Hereinafter, an AV data recording apparatus according to Embodiment 3 of the present invention will be described with reference to the drawings. In the third embodiment, a case where 100 AV files are recorded under the directory AV_DIR1 is explained. Fig. 8 is an illustration of a file / directory structure according to the third embodiment. As for the implementation modes 1 and 2, the range of "allocation completed" and "unrecorded" is excluded from the lower area of the directory or file, and the file entry of the AV file is recorded in this area. However, in this third embodiment, the difference from the previous embodiment is that the 32 paper sizes used to produce the catalog for recording AV files are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public) (Please read the precautions on the back before filling this page) -tr ° J · -line 526477 A7 ^ _______ B7____ 5. In the description of the invention (3l), make a file identification descriptor for AV files in a continuous area or Archive entry. Fig. 9 is a diagram showing an example of the data structure of the partition space in the third embodiment. In Fig. 9, a file, 7: file name is automatically attached to each file, and is recorded in the file identification descriptor. In the third embodiment, 100 files are located under the directory AV_DIR1, and within the range of the directory AV_DIR1, 100 file identification descriptors are recorded. The description descriptors in the file entries of the AV files recorded in LBN = 101 ~ 200 do not extend to the range, and the data capacity of the files is 0 (zer0). In the third embodiment, a file identification descriptor or a file entry is recorded. Therefore, during the recording of the AV file, the data is read into the memory unit 4 in the same manner as the processing sequence shown in FIG. 4, except that in step S402, the unrecorded area is not scanned, but is changed. Scan the information of the file entry recorded in LBN = 101 ~ 200, detect the file entry with the capacity of 0 (Zer0), and record the detected file as a novel AV file. Then, after the recording of the data is completed, the information on the position and length of the range recorded on the configuration descriptor of the file entry included in the memory unit 4 or other file management information is updated. Finally, as in step S408, the content of the memory section 4 is written back to the disc 1. Similarly, the AV file can be reproduced in the same manner as described in the first embodiment. In addition, in the third embodiment, a file entry with a file capacity of 0 (zero) is detected as a novel AV file, but the method of detecting a novel file entry is not limited to this method, and may be other Method. 33 This paper size Turns Towels Standard (CNS) A4 specification (210 X 297 public love) " '-(Please read the precautions on the back before filling this page) 0 • Line 526477 A7 ....--- --^ 87_ V. Description of the invention (p) For example, 'You can also change the file name in the initial state and the actual AV file record, or use the file attribute column in the file identification descriptor or the extension in the file entry. Attribute column, etc. to determine whether it is beneficial to record the AV file. Also, although the data capacity of the file in the initial state is determined to be o (zer〇), for example, it can also be used to record common attribute information between AV files in the initial stage. Information is recorded in the state. (Embodiment 4)-Hereinafter, an AV data recording apparatus' according to Embodiment 4 of the present invention will be described with reference to the drawings. In the above-mentioned first to third embodiments, the file management information such as the file entry is recorded for the area having been secured in advance. In the fourth embodiment, not only the file entry, but also the attribute information of the AV file is recorded in the area secured in advance. This is the difference. This makes it possible to access specific information on the AV file at high speed and continuously. Fig. 10 is an illustration of the data structure of an AV file recorded in the fourth embodiment. In Fig. 10, the AV file of the fourth embodiment is a transport stream of MPEG, and is composed of an AV stream section of a video object and a property data section of a dedicated stream. The AV stream unit is composed of a plurality of video object units (hereinafter referred to as "VOBU"). One V0BU is AV data corresponding to 0.4 to 1 second of video data, and is included in a video data interval called GOP (Group Of Pictures) in the MPEG standard. Since the GOP contains at least one I picture, it can be reproduced separately. Also, for fast forward regeneration, fast backward regeneration, etc. 34 paper sizes are applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)-Binding · • Line 526477 — A7 ______B7_____ 5. In the case of special reproduction (y ^) and reproduction at a specified time, the I picture in the GOP is extracted as the picture to be reproduced. In the attribute information section, attribute information about the AV stream is recorded, for example, the recording date of the file, instructions for the recorded information, parameters at the time of recording, thumbnail images, and the like are recorded. In addition to the above-mentioned attribute information, for the AV stream, the time mapping information is recorded as information that can be easily reproduced for special reproduction or reproduction at a specified time. The so-called time mapping information is, for example, as described in Japanese Patent No. 3028517, which is information corresponding to the reproduction time and recording position of the AV stream. As shown in FIG. 11, it has information called a time mapping table and a VOBU table. Hierarchical data structure composed of two tables 6 Here, the time mapping table is when the TMU (for example, 60 seconds) is reproduced at a certain time interval on the time axis with the front end of the AV stream part as the starting time. A time table corresponding to the recording position of the VOBU at the playback time is mapped to # 1, # 2, ..., and a parallel table. The VOBU table is a table in which the VOBUs of the playback time of each VOBU and the size of the data are mapped side by side in the order of the playback time from the front of the AV stream unit. Figure 12 shows a more detailed data structure of time mapping information. Fig. 13 shows the logical connection relationship between the time mapping table and the VOBU table. Here, the general information of time mapping includes: the number of time mapping and VOBU mapping included in the time mapping information, and the time unit (hereinafter referred to as "TMU") used to display the set time mapping. ), 35 paper sizes apply Chinese National Standard (CNS) A4 specifications (210 X 297 mm) (Please read the precautions on the back before filling this page)-Binding · 丨 Line 526477 A7 _ ___ Β7 __ V. Invention Explanation (> 〒) Display the time difference set (hereinafter referred to as "TM_OFS") of the time difference between the time at the front end of the AV stream and the time at the front end. Among them, — of TM-0FS is '0' on the premise that the editing operation such as deletion of the front end of the AV stream part is not performed. Also, in the time mapping table, plural time mappings # 1, # 2, ··· are arranged in a time sequence in the order of time, which are set at regular intervals shown in the aforementioned TMU. Each time map is composed of the VOBU map number and time difference (hereinafter referred to as "-TM-DIFF") and the VOBU address (hereinafter referred to as "VOBU-ADR"). The VOBU-ADR corresponds to the position information in the AV stream section at the front end of the VOBU. The reproduction time for time map # 1 (hereinafter referred to as "time map time") is represented by (Expression 1). (Time mapping time) = (TMU * (i-1) + TM-OFS) · (Formula 1) The VOBU mapping number indicates the VOBU mapping number existing at the reproduction time represented by (Expression 1). For example, as shown in Figure 13, the time map # 1 represents the time at the front end of the AV stream and the time when TM_OFS was added. The time map # 2 represents the time map after the TMU, and the following are represented in the 2TMU, 3TMU, ··· VOBU mapping at the reproduction time. TMJ3IFF indicates the time difference between the corresponding front-end time of the VOBU and the time mapping time. Therefore, the front end time of VOBU # j is expressed by (Expression 2).

(The front end of the VOBU) ij = TMU * (jl) + TM—OFS-TM-DIFF ___ 36 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back first Please fill in this page again)-Install 丨 line 526477; A7 — "......... ……. 一 -.............. 一 ._ — B7 __ V. Description of the invention (, <) • (Equation 2) In the VOBU table, VOBU mappings # 1, # 2, ... corresponding to the VOBU included in the AV stream part are 1 to 1 are listed. Each VOBU The antipodal system is composed of the reference image size, VOBU playback time, and VOBU size. The reference image size is the size of the first I picture in the VOBU. It is used to find the target for special reproduction or reproduction at a specified time. For example, the VOBU playback time is sequentially added to the above-mentioned VOBU front-end time until the playback time of the target image is reached. This allows you to specify the playback target and further specify the image in the VOBU. VOBU size is VOBU. The data size refers to the position of the image data of the object specified during the special reproduction or the reproduction at a specified time. As described above, according to the fourth embodiment It is possible to search specific images such as I-pictures at high speed even during special playback. In the initial state of the fourth embodiment, the file / directory structure is the same as that in Fig. 2. On the other hand, it corresponds to it. The data structure of the partition space is shown in Figure 14. The difference from Figure 3 is that in addition to the file management information, part of the AV file and the area used for recording are also "allocated" in the directory AV_DIR1 and "Unrecorded" range to ensure. Therefore, the logical block in which the range (2) of the directory AV_DIR1 is recorded becomes LBN = 86 ~ 500. If it is assumed that there are the same number of AV files, it can be ensured more than the situation in FIG. 3. At this time, relative to the imaginary number of AV files, the capacity guaranteed is the capacity of the total file management information and attribute information department. 37 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please first Read the precautions on the back and fill in this page) —install · -line B7 V. Description of the invention (present (now) winner. In the AV file, although the attribute information section contains items, it corresponds to the time mapping information The data capacity of the AV Streaming Department, but by setting conditions such as the capacity of the disc, the number of recorded AV files, and the bit rate of the AV stream, the time mapping information recorded in disc 1 can be determined in advance Therefore, compared to the AV files recorded in the directory AVJ3IR1, it is sufficient to ensure the capacity of the AV reservation area by estimating the capacity of the entire attribute information department when the capacity of the time mapping information department is the maximum. When recording an AV file on a disc with related data structure, it follows the processing flowchart of FIG. 15. In FIG. 15, the content of LBN = 0 ~ 500 on disc 1 is first read into the memory unit 4 Up (step S1301). Second, the range information of the directory AV_DIR1 on the memory unit 4 is scanned to determine the presence or absence of the unrecorded area required on the recording file identification descriptor, the file entry, and the attribute information of the file (step S1302). If it is determined that there is not enough unrecorded area in the recording attribute information section (step S1302: No), the AV file recording is terminated by error processing. If it is determined that there is sufficient unrecorded area in the recorded attribute information section, the memory section The unrecorded area within the range of the directory AV_DIR1 on 4 records the file identification descriptor, the file entry, and the attribute information section of the AV file (step S1303). Next, the directory AV_DIR1 is overwritten based on the records of the file identification descriptor and the file entry. Describes the configuration descriptor of the file entry. Specifically, it changes the length of the range caused by the addition of the file identification descriptor (please read the precautions on the back before filling out this page) -installation-line · ___ 38

V. Description of the invention Gj) Change, and remove these overwrite operations from the unrecorded area of the recorded file entry. In addition, a portion regarding the information to be recorded is also recorded in the AV reservation area on the memory section 4. Next, the blank bit mapping on the memory section 4 is scanned to determine the presence or absence of the required number of unallocated logic blocks recorded on the AV file (step S1304). If it is determined that there are no required number of unallocated logic blocks (step S1304: No), error processing is performed to end the recording of the AV file. If it is determined that the required number of unallocated logic blocks is recorded, data is recorded for the logical block of the recording medium corresponding to the unrecorded area obtained in step S1303 (step S1305). Also, in the attribute information of the AV file, since the time mapping information is obtained at this time, the AV reserved area on the memory section 4 is appropriately recorded. When the recording of the AV file data is ended, the position and length information of the range of the AV file is recorded in the configuration descriptor in the file entry made in step S1303 (step S1306). In addition to the placement descriptor, necessary information such as the file name and file creation time is updated for the file identification descriptor and file entry. Next, for the blank bit mapping on the memory section 4, the bit corresponding to the logical block of the data recorded in step S1305 is changed to "1" indicating "allocation completed" (step S1307). Next, the content of the memory 3 is written back to the position of LBN = 0 to 500 on the disc 1 (step S1308). If the file is recorded in this way, it becomes the Av file under the directory AVJDIR1. If you want to record multiple AV files in a continuous manner, the Chinese National Standard (CNS) A4 specification is applied at the 15th paper size ( 210 X 297 mm) &quot; (Please read the precautions on the back before filling out this page) -Packing ... Thread A7 52647f.4 «ΐί ___________ Β7 ___ V. Description of the Invention ($ 丨) (Please read the precautions on the back before (Fill in this page) In the processing flowchart shown in the figure, until the recording of all AV files after step S1301 ends, repeat steps S1302 to step S1307, and proceed to step S1308 after the recording of all AV files ends. This eliminates the need to write the file identification descriptor and file entry back to the disc each time a file is created, which can greatly reduce the number of search operations. According to the processing flow shown in FIG. 15, the data structure of the partition space after the FILE1.DAT and FILE2.DAT of the AV file are recorded under the juv AVJ3IR1 is shown in FIG. 16. Here, in the AV reservation area, a file identification descriptor, a file entry, and an attribute information section of the AV file are recorded. When an AV file is reproduced from a disc having the data structure shown in Fig. 16, the same procedure as that described in the first embodiment can be performed. In step S408, the content of LBN = 0 to 500 on the disc 1 is read into the memory unit 4. • On the other hand, when a specific display time of an AV file is reproduced, all the AV files that will exist under the directory AVJDIRi are stored on the memory section 4 with file identification descriptors, file entries, and attributes including time mapping information. The information department reads in. Therefore, the offset position in the file at a certain reproduction time can be obtained by processing the information in the memory section 4, without the need to perform the reproduction operation for the disc 1. As a result, special reproduction such as selective reproduction of a specific frame can be easily performed. In addition, operations such as taking out various kinds of attribute information as a list and displaying it to the user can be performed at high speed. The above-mentioned continuous regeneration is recorded in accordance with the processing sequence shown in Figure 15 ^ _ 40 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 public love) A7 526477 __ ^ ____ B7_____ V. Description of the Invention It is realized that if the recording order according to the fourth embodiment of the present invention is not used, the attribute information of the AV file is recorded in the same range as the AV stream unit. As a result, it is impossible to avoid a search operation for obtaining attribute information. It is also acceptable that the positional relationship in the AV reservation area of the file entry, the attribute information, and the time mapping information is different. As for the reproduction of the AV file, although the portion of the AV reservation area in which the attribute information of the AV file is recorded is also read into the memory section 4, it may not be read at all during the most time, but may be read as necessary. Sex to read in. In this case, compared with the conventional technology, the number of search operations can be reduced, and the attribute information and high-speed access table used for AV files can be read at high speed. In the fourth embodiment, although the AV reservation area is set as a range of the directory AVJDIR1, it is also possible to create a management file as in the second embodiment and set the AV reservation area as the range. In this case, recording / reproduction of an AV file is performed in the same manner as in the second embodiment. In addition, the AV reservation area may be secured in a plural range. For example, the AV reservation area for the file management area can be set as the range of the directory AVJDIR1, and the AV reservation area for the attribute information of the AV file can be set as the range of the management file. Alternatively, two types of management files can be set, an AV reservation area for the file management area can be set in the first management file, and an AV reservation area for the attribute information of the AV file can be set in the second management file. Any other method may be used as long as the AV reservation area can be ensured as a continuous area, even if it is another method. 41 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)-(Please read the precautions on the back before filling this page) Order--Line -------- ~ 526477 _____ Β7__ 5 Explanation of the invention (ιρ) In addition, the time mapping information may be information giving the playback time and recording position of the corresponding AV stream, and may be something other than the structure shown in FIG. 11. Furthermore, in the fourth embodiment, although the AV file is a MPEG transmission stream, it may be in other formats, as long as the specific information of the AV file is secured in advance and recorded in a certain area. (Embodiment 5) Hereinafter, an AV data recording apparatus according to Embodiment 5 of the present invention will be described with reference to the drawings. As described above, in the fourth embodiment, an AV file composed of an AV stream section and attribute data sections in which MPEG2 video data has been recorded is recorded. In the aspect of the fifth embodiment, the Av file is an Exif image file, which is composed of main image data (Exif main image) and associated auxiliary information. That is, the AV file of the fifth embodiment is characterized by a header section (consisting of ancillary information) about a still image image and an image data section (consisting of the still image data body). Constituted), and its subsidiary information is recorded in the AV reservation area. Thereby, specific information such as thumbnail images of AV files can be accessed at high speed and continuously by searching only in the AV reservation area, which is an advantage. Fig. 17 shows an example of the data structure of the AV bridge case of the AV data recording device according to the fifth embodiment of the present invention. In Fig. 17, the AV file of the fifth embodiment is composed of a header section and a video data section. In the header section, subsidiary information about the image data section is recorded. For example, it records the recording time of the file, the instructions for the recorded information, and the 42 paper standards (CNS) A4 specification (210 xi &amp; a '~ (Please read the precautions on the back before filling in this (Page) Suspect. Ί LINE-526477 ^ A7 ^^ ____ One ... One, five, the parameters of the invention when recording and compression, thumbnail images, etc. In addition, the static image after JEPG compression is recorded in the image data department It is like the data body. The file / directory structure in the AV data recording device of the fifth embodiment is the same as that in FIG. 2. On the other hand, the data structure of the relative partition space is the same as that in FIG. M. However, it is in the AV reserved area. The file management information of the AV file and the data of the capacity determined in advance from the front end of the AV file are recorded. The data of the capacity determined in advance includes at least a thumbnail image of the size of the header portion of the AV file. In this way, when displaying the thumbnail list of the recorded AV file and the list of recording time to the user, since this information is recorded in the AV reserved area of the continuous area, high-speed display can be performed. In addition, as shown in FIG. 18, padding data for adjusting the capacity of the header can be inserted into the data structure of the AV file, so that the entire capacity of the header becomes the capacity of the logical block of the UDF. Integer multiple. At this time, due to the insertion of sufficient data, the capacity of the header becomes an integer multiple of the capacity of the logical block of the UDF, and the image data can always be arranged from the front of the logical block. In addition, it becomes the AV reserved area. Only the status of the file management information and the header section are recorded. This allows the header section and the image data section to be completely separated during the recording and reproduction of the AV file, and can be processed by logical block units. Recording and reproduction are performed at a higher speed. In the fifth embodiment, although the AV file is regarded as an Exit file containing a JPEG-compressed main image, it is not limited to this, as long as it is in the header section. The static image files in the form of supplementary information are all 43 (Please read the precautions on the back before filling out this page) ·-The paper size of the thread applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) 526477 A7 __B7_ The invention can be explained. In addition, AV files can exist in plural on the disc. At this time, a static image file can be recorded in one directory as in the fifth embodiment, and another directory can be recorded in MPEG2 as in the fourth embodiment. Animation files. In addition, the number of AV directories is not limited to two as described above, and the number of directories can be increased as necessary. At this time, the management of the AV reservation area can be performed for each directory, and a dedicated management directory can also be set. , To manage the AV reservation area used by each directory. For example, consider Figure 19, set the AV reservation area management file AV FILES.IFO under the management directory AV_INFO, and use the AV reservation area management file to manage the AV reservation. Area, the still image file is recorded under the AV directory AV_DIR !, and the animation file is recorded under the directory AV_DIR2. Also, it is not limited to each directory being limited to recording animation files or still image files, and it is also possible to mix and record animation files and still image files in one directory. As described above, according to the fifth embodiment, the data recorded by the user can be separated from the information used to manage the data, and the management information can be prevented from being damaged due to erroneous operations. In addition, although only the AV reservation management area file is set here, it is also possible to construct the AV reservation area management file under each AV directory. (Applied Form 6)

Hereinafter, an AV data recording apparatus according to a sixth embodiment of the present invention will be described with reference to the drawings. In the sixth embodiment, the paper size is suitable for AV paper. ---------- 1 _National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling (This page)

A7? 526477 V. Description of the invention) The catalogue has a hierarchical structure. It is convenient to provide a hierarchical directory for classification and the like of recorded data. However, since the directory is also used as a file in the case of UDF, the search action cannot be avoided especially in the directory structure at the deep level. Therefore, in the sixth embodiment, a reservation area is also set for creating a hierarchical directory. Fig. 20 shows an example of a file / directory structure just after a directory for recording an AV file is created. Fig. 21 shows the data structure of the partition space in the state where the file / directory structure shown in Fig. 20 is recorded on the disc used in the AV data recording device according to the sixth embodiment of the present invention. In LBN = 86 ~ 250, the range (2) and range (2) of the AV_DIR1 directory are set to "allocation completed" and "unrecorded" to set the upper 2 bits of the allocation descriptor. This range (2) is hereinafter referred to as the AV directory reservation area. In the case of discs with related data structure, when further subdirectories are created under the AV directory, the processing flowchart shown in Fig. 22 is followed. First, the contents of LBN = 0 to 250 on the disc 1 are read into the memory section 4 (step S171). Next, the information of the AV directory reservation area on the memory unit 4 is scanned to determine the existence of a sufficient unrecorded state on the file identification descriptor and file entry for recording a new AV subdirectory (step S172). If it is determined that there are insufficient unrecorded areas (step S172 ··· No), an error process is performed and the AV subdirectory creation process is terminated. If it is determined that there is sufficient unrecorded area, it is applicable to the 45 paper sizes on the record billion body 4 (CNS) A4 specification (210 X 297 mm) &quot; ~ I (Please read the notes on the back first (Fill in this page again)

ί, 526477 A7 _B7___ — V. Description of the Invention The unrecorded area in the AV reservation area of 0 ^ L [) records the file identification descriptor and file entry (step S173). At this time, the size of the range of the AV_DIR1 directory will be changed due to the records of the file identification descriptor and the file entry, which corresponds to the configuration descriptor that overwrites the file entry of the AV_DIR1 directory. Specifically, the two overwriting operations are performed by adding the file identification descriptor to change the range length of the range (1) and excluding the part of the recorded file entry from the range (2). Secondly, scan the blank bit mapping on the memory section 4 to determine the presence or absence of the continuous unallocated logical blocks of the required number in the recorded and recorded AV subdirectory file and the AV reserved area allocated there ( Step S174). If it is determined that the required number of consecutive unallocated logic blocks is not provided (step S174: No), the processing is terminated. If it is determined that the required number of consecutive unallocated logical blocks is recorded, data is recorded for the logical blocks of the disc corresponding to the unallocated area obtained in step S173 (step S175). Here, the record of data includes the creation of a directory file of the AV sub-directory and the securing operation of the AV reservation area allocated to the AV sub-directory. After the recording of the data is completed, in order to update the file management information of the AV subdirectory file, the position and length information of the scope of the AV subdirectory grabbing is recorded in the file entry on the memory unit 4 made in step S173. In the configuration descriptor (step S176). In addition to the placement descriptor, necessary information such as the file name and file creation time are also updated for file identification interpolators and file entries. — 46 This paper size applies to China National Standard (CNS) A4 specifications (210 X ------- (Please read the precautions on the back before filling this page) 丨 Installation 丨 Line · 526477 "A7 i B7-—— ---------------_ ..... P &quot; '.. -.--.-1 1-5. Description of the Invention (0) Secondly, for the memory part 4 On the blank bit mapping, the bit corresponding to the logical block of the data recorded in step S173 is changed to "1" indicating "allocation completed" (step S177). Next, the content of the memory section 4 is written back The position of LBN = 0 ~ 250 on disc 1 (step S178). Through a series of processing, an AV subdirectory AV_SUB_DIR1 is created under the directory AVJDIR1. At this time, the @ 录 结构 系 is shown in FIG. 23. Also, the data structure of the partition space at this time is shown in Fig. 24.-Here, as in the first embodiment, in the AV directory reservation area, starting from the logical block with a large LBN, a new file entry record is used. On the one hand, the file identification descriptor is recorded in the form of appending to the end (1) of the recording completion range of the directory AVJDIR1. The recorder is not an AV file, but a directory file. In addition, the created AV sub-directory is the aforementioned range (2), which is set in a manner of "allocation completed" and "unrecorded". Place the upper 2 bits of the descriptor. After that, when the AV file is recorded in the directory AV_SUB-DIR1, the AV reserved area is recorded in the same order as in the first embodiment for recording. When recording an AV file on a disc of related structure, follow the processing flowchart in Figure 25. First, read the contents of LBN = 0 ~ 79 and LBN = 250 ~ 400 on disc 1 into the memory section. 4 (Step S201). Next, scan the information of the AV reserved area of the sub-directory AV_SUB_DIR1 on the memory unit 4 to determine the sufficient unrecorded area on the newly recorded file identification descriptor and the file entry. CNS) A4 specification (210 X 297 mm) (please read the precautions on the back before filling this page)-£ ·.-Line A7 _____ 丨 _B7__ V. Description of the invention) (step S202). If it is determined that there are insufficient unrecorded areas (step S202: No), an error process is performed to end the recording of the AV file. If it is determined that there is a sufficient unrecorded area, the file identification descriptor and the file entry are recorded in the unrecorded area in the AV reserved area of the subdirectory AV_SUBJDIR1 on the memory section 4 (step S203). Next, the blank bit mapping on the memory section 4 is scanned to determine the presence or absence of the required number of unallocated logic blocks on the recorded AV file (step S204). If it is determined that there is no required number of unallocated logic blocks (step S204: No), an error process is performed to end the recording process. If it is judged that the required number of unallocated logic blocks is recorded for the logical block of the recording medium corresponding to the unrecorded area obtained in step S203 (step S205). After the recording of the AV file data is completed, in order to update the file management information of the AV file, the information of the position and length of the range of the AV file is recorded in the configuration of the file entry on the memory unit 4 made in step S205. Descriptor (step S206). Next, for the blank bit mapping on the memory section 4, the bit corresponding to the logical block of the data recorded in step S205 is changed to "1" indicating "allocation completed" (step S207). Next, the contents of the memory section 4 are written back to the positions of LBN = 0 to 79 and LBN = 250 to 400 on the disc 1 (step S208). With this, AV files can be recorded under the directory AV_SUB_DIRi. With the processing shown in Figure 25, the FILE1.DAT and FILE2.DAT of the AV file are recorded in the partition after the directory AV_SUB_DIR1. 48 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the notes on the back before filling out this page) t · Order · -line 'ί2647? Ι Α7 Β7 5. The data structure between the descriptions of the invention is shown in Figure 26. In FIG. 26, in the AV reserved area allocated under the directory AV_SUBJDIR1, a logic block with a large LBN has been used for the record of the novel file entry. On the other hand, the file identification descriptor is added to the directory. The final form of the range (1) of the recording completion range of AV_SUB_DIR1 is recorded. In addition, when a predetermined number of AV files are recorded under the directory AV_SUB-DIR1, other subdirectories are created under the directory AV_DIR1, and the AV files are recorded under it. ~ When an AV file is reproduced from a disc having the data structure shown in Fig. 26, the following procedure is performed. First, the ROOT directory is read, followed by the directories AV_DIR1 and AV_SUB_DIR1. At this time, the portion corresponding to the AV reserved area allocated by the directory AV_SUB_DIR1, that is, LBN = 251 to 400 is read into the memory section 4. Then, scan the recording completion range of the directory AV_SUB_DIR1 to get the name of the file under the directory AV_SUB_DIR1. Then, the files are accessed in the order described in the conventional technique, and the files are reproduced. When reading files in other AV subdirectories, the same is done after reading in the AV reserved area allocated by the AV subdirectory, and then accessing the files. According to the sixth embodiment described above, even in the case where the directory has a hierarchical structure, the number of search operations during file creation or file reading can be greatly reduced. In addition, in the production of the new AV sub-catalog, for example, when receiving 49 paper sizes from the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please read the precautions on the back before filling in this page)

Fuchong _____ Β7 V. Description of the invention (#) It can be performed when the user instructs, or when the record of the previous number of users is recorded in the AV subdirectory. (Embodiment 7) Hereinafter, an AV data recording apparatus according to Embodiment 7 of the present invention will be described with reference to the drawings. In the seventh embodiment, a case where the AV directory has a hierarchical structure and an AV reserved area is also allocated to the AV subdirectory will be described. First, in the seventh embodiment, the structure of a file / directory immediately after creating a directory for recording an AV directory is the same as that shown in FIG. 20. The data structure of the partition space is the same as that of FIG. 21. In a disc with related data structure, the processing flowchart for the case of further making sub-directories in the AV directory is shown in Figure 27. In FIG. 27, first, the contents of LBN = 0 to 250 on the disc 1 are read into the memory section 4 (step S241). Next, the information of the AV directory reservation area on the memory unit 4 is scanned to determine whether there is a sufficient unrecorded state in the file identification descriptor and the file entry for recording the new AV sub-directory (step S242). If it is determined that there is not a sufficient unrecorded area (step S242: No) ', an error process is performed to end the AV subdirectory creation process. If it is determined that there are sufficient unrecorded areas (step S242: Yes), the file identification descriptor and file entry, and the AV subdirectory file are recorded for the unrecorded areas in the AV reserved area on the memory section 4 (step S243). At this time, since the file identification descriptor and file entry, and the AV sub-directory file are recorded, the size of the range of the AVJDIR1 directory will be changed, which is 50 '— 丨 _ This paper standard applies to China_Home Standard (CNS) A4 specification (210 X 297 Public Love) (Please read the notes on the back before filling this page)

526477 A7 _____B7 V. Description of the Invention (# |) Corresponds to the configuration descriptor that overwrites the file entry of the AV_DIR1 directory. Specifically, the two overwriting operations are performed by adding the file identification descriptor to change the range length of the range (1) and excluding the recorded file entry or directory file from the range (2). Next, the information of the blank bit mapping on the memory section 4 is updated as necessary (step S244). Next, the contents of the memory section 4 are written back to the positions of LBN = 0 to 250 on the disc 1 (step S245). Through a series of processes, an AV subdirectory AV_SUB_DIR1 is created under the directory AVJDIR1. The structure of the directory after the AV subdirectory is created is the same as that shown in FIG. The partition structure after the AV subdirectory is created is shown in FIG. 28. In Fig. 28, as in the first embodiment, recording is performed in the last form of the range (1) in which the file identification descriptor is added to the recording completion range of the subdirectory AV_SUBJDIR1. On the other hand, the recording of novel file entries and directory files is started from the logical block with a large LBN in the AV directory reservation area. Secondly, the flowchart of processing when an AV file is recorded on a disc with related data structure is shown in FIG. In FIG. 29, the content of LBN = 0 ~ 250 on the disc 1 is first read into the memory section 4 (step S261), and the information of the AV directory reservation area on the memory section 4 is scanned. The presence or absence of a sufficient unrecorded area on the file identification descriptor and the file entry is recorded (step S262). If it is determined that there is not a sufficient unrecorded area (step S262: No), an error process is performed to end the recording process of the AV file. If it is judged that there are enough 51 paper standards to apply Chinese National Standard (CNS) A4 specifications (210 x 297 mm) (please read the precautions on the back before filling this page) · -line 526477 A7 '__—_ B7___ V. Description of the invention (P) The unrecorded area (step S262: Yes) is recorded in the unrecorded area in the AV reservation area on the memory section 4 and contains the description and file entry (step S263). Next, the blank bit maps on the scan memory section 4 determine the presence or absence of logical blocks of the required number of unallocated areas on the recorded AV file (step S264). If it is determined that there is no required number of logical blocks of the unallocated area (step S264: No), error processing is performed, and the recording processing of the AV file is ended. If it is determined that the logical blocks with the required number of unallocated areas are recorded for the logical blocks corresponding to the relevant area (step S265) ° When the recording of the AV file data ends, it is to update the file management information of the AV file. The position and length of the range of the AV file are recorded in the allocation descriptor in the file entry on the memory unit 4 created in step S263 (step S266). Next, for the blank bit mapping on the memory unit 4, the bit corresponding to the logical block of the data recorded in step S265 is changed to "1" indicating "allocation completed" (step S267). Next, the contents of the memory section 4 are written back to the positions of LBN = 0 to 250 on the disc 1 (step S268). With this, AV files can be recorded under the sub-directory AV_SUB_DIR1. The data structure of the partition space after recording the AV file FILE1.DAT under the AV directory AV-SUBJDIR1 and creating a new sub-directory AV_SUB-DIR2 is shown in FIG. 30. In FIG. 30, in the AV reservation area of the directory AVJDIR1, the file management information of the AV files recorded in the AV subdirectory and the AV subdirectory, and the AV subdirectory file itself are recorded. According to the related structure, even if 52 paper sizes are to be continuously stored, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applicable (Please read the precautions on the back before filling this page) -t · Order: -line 526477 A7 ____________B7 V. Description of the Invention (^) When the files in different AV sub-directories are taken, the search for discs can still be reduced. The disc structure at this time has the structure shown in FIG. 31. When reproducing an AV file from a disc with this structure, the ROOT directory is read first, and then the directory AV_DIR1 is read. At this time, an area corresponding to the AV reserved area allocated in the directory AV_DIR1 is included, that is, LBN = 0 to 250 is read into the memory section 4. Next, the range of the sub-directory AV_SUBJ3IR1 in the memory section 4 is scanned to obtain the file name recorded under the sub-directory AV_SUB_DIR1. Even when files in other AV subdirectories are read in, since the range of the directory files is already read in the memory section 4, the files for scanning related information can be accessed. As described above, according to the seventh embodiment, even if the directory has a hierarchical structure, the number of search operations during file creation or file reading can be greatly reduced. (Embodiment Mode 8) In the recording of AV files, in order to achieve the purpose of real-time recording, alternate processing is not performed. Instead, as described in International Publication No. W098 / 14938, defective blocks are skipped and recorded. On the other hand, if the file management information recorded in the AV reservation area cannot be read from a disc defect, etc., reproduction of the file is not possible, and it requires a highly reliable record. Therefore, regarding the AV data recording method of the eighth embodiment, when the role of recording the directory of AV files to ensure the AV reservation area is 53 (please read the precautions on the back before filling this page)

This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 526477, A7, B7

V. Description of the invention (tM 丨 / At the same time, check the defective block. If a defective block is found, use the other block instead of the defective block to ensure the control of the AV reservation area. This will not damage the record in The continuity of the data in the AV reservation area can be recorded with high reliability. (Embodiment 9) When an AV file treats a thumbnail image as other files, it is used to record the thumbnail image. The continuous area of the file is ensured as a reserved area.-With this, when the thumbnail list of the recorded file is to be displayed to the user, the thumbnail is recorded in the continuous area and can be displayed at high speed. (Implementation Aspect 10) In the above-mentioned embodiment, when recording an AV file in a novel way, it is determined whether there is an unrecorded area in the AV reservation area. If it is judged that an insufficient unrecorded area on the novel AV file is recorded, The error processing is performed to end the recording of the AV file. However, for this processing, even if the blank capacity of the disc is retained, if there is no unrecorded area in the AV reserved area, it cannot be recorded. There are many aV files, which is a new issue. Therefore, in the tenth embodiment, the feature is that when the capacity of the AV reservation area is insufficient, a new AV reservation area can be secured, and After that, the AV file is recorded. Figure 32 shows the partition space in the state where there is no unrecorded area in the AV reservation area according to the AV file recording. At this time, the Chinese National Standard (CNS) A4 is applied at the 54 I paper scale. Specifications (210 X 297 ------- (Please read the precautions on the back before filling in this page) t · · -line 52647f 4 li A7 \ a '. J_B7___ 5. Description of the invention LBN = 251 ~ 685 Record The plural AV files are recorded in the LBN = 86 ~ 250 of the AV reservation area. All the file management information such as the file entry of these AV files is recorded. All of them are in the state of recording completion. The AV file cannot be recorded because there is no unrecorded area in the AV reservation area. Therefore, the allocation of the directory AV_DIR1 is completed and the unrecorded range is to ensure a novel AV reservation area. To ensure a novel AV reservation area Processing The sequence shown in Figure 33 is performed.-In Figure 33, the information of the blank bit mapping is scanned first to determine the number of consecutive unallocated logical blocks that ensure the required number on the novel AV reservation area. Yes (step S331). If it is determined that there is no required number of logical blocks (step S331: No), error processing is performed to end the operation of securing the AV reserved area. If it is determined that the required number of logical blocks (step S331: Yes), to ensure that the unallocated area is assigned to the directory AVJ3IR1 and that the range (3) is not recorded. That is, the information about the range position and range length of this range (3) is recorded in the file entry of the directory AV_DIR1 Configuration descriptor (step S333). Next, for the blank bitmap, change the bit corresponding to the logical block of range (3) to '1' to show "allocation completed" (step S334). It is shown in Figure 34 to ensure the novelty The state of the partition space after the AV reservation area. As shown in FIG. 34, an example is provided, and LBN = 686 to 850 is ensured as a novel AV reservation area. __ 55___. The paper ^ dimensions are in accordance with China National Standard (CNS) A4 (210 X 297 mm) _ &quot;-(Please read the precautions on the back before filling this page) -t · * tr ° J · -line meaning Alone Λ7

; I: L —i_BZ ___ 5. Description of the Invention (rf) Moreover, the processing order for ensuring a novel AV reservation area is not limited to the above-mentioned order. For example, it is also possible to change a blank bit after determining the existence of a necessary logical block. The information of the meta-map is then recorded in the configuration descriptor in the file entry of the directory AV_DIR1 about the range (3). In addition, as shown in the second embodiment, when the AV reservation area is ensured to be within the range of the file AVFILES · IFO, the novel AV reservation area is also ensured to be within the range of the file AVFILES. IFO. Furthermore, in the case where the AV reserved area is secured as a named stream, the novel AV reserved area can also be treated as a novel named stream to secure the AV reserved area. [Industrial availability] As described above, according to the AV data recording device of the present invention, by recording the file management information and the attribute information of the AV file in a continuous area secured in advance, the directory for the AV file can be reduced. Obstacles in the realization of recording / reproduction are the search operation for the disc. Moreover, even in the case where a large number of still images obtained by JPEG compression or the like are recorded, the file management information is recorded in a continuous area and can be read at a high speed. (Please read the notes on the back before filling in this page) t · · -line [Symbol] 101 Disc 102 Recording Media Drive Section 103 Recording / Reproducing Section 104 Memory Section 105 Disc Drive Unit 56 This paper is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 丨 Charge π 5. Description of the invention (ft7) A7 B7 106107 AV signal processing system control unit (please read the precautions on the back before filling this page)-installed. Line 57 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

Claims (1)

526477;-… H A8 .... U scolded D8 6. Scope of patent application 1. An AV data recording device, comprising: a recording and reproduction unit for recording AV data on a disc, or (Please read the notes on the back before writing this page) Recorded AV data reproduction; and the system control section, which is used to control the recording and reproduction methods; It has: range management information (the continuous block on the disc should be treated as To manage the scope), file management information FI (to manage the scope as a file group), and directory information (to manage the file group as a directory); to record the directory information, the The file management information, a part of the file, and an area reserved for at least one of the entire file are secured. 2. As for the AV data recording device in the first scope of the patent application, in which, regarding the reserved scope, at least the information on the disc for managing the position and capacity on the disc is recorded in advance. 3. If the AV data recording device in the first scope of the patent application is filed, the reserved scope will be secured in the form of assigned scope. 4. If the AV data recording device of the second scope of the patent application is applied, the reserved scope will be ensured in the form of allocated completion scope. 5. If the AV data recording device in any one of the scope of application for patents 1 to 4, the record management information of the file is recorded in advance to ensure the :: force reservation range. 6. For the AV data recording device according to any one of the scope of patent applications 1 to 4, when recording a file on a disc, the attribute information about the AV file is recorded in the reserved range%. : 7. If the AV data recording device in item 6 of the scope of patent application, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) A8 B8… "g8s 6. The scope of patent application, regarding the AV The attribute information of the file is a range forming a part of the AV file. (Please read the precautions on the back before copying this page) 8. If the AV data recording device under the scope of patent application No. 6, the attribute information about the AV file is a part or all of the file that is different from the AV file . 9. For example, the AV data recording device in the scope of the patent application, wherein the AV file is an MPEG transport stream, and the attribute information about the AV file recorded in the reserved range includes time mapping information of the transport stream. 10. As for the AV data recording device in the sixth scope of the patent application, wherein the AV file is an Ex: if image file, and the attribute information about the AV file recorded in the reserved range includes the Ex: if image Part of the file with Exif extensions. 11. If the AV data recording device according to any one of claims 1 to 4, the newly created sub-directory under the directory will be used to record the files made under the hierarchy of the sub-directory. File management information, a new reservation range for at least one of the files, and the entire file are secured. 12. As for the AV data recording device in any one of the scope of applications for patents No. 1 to 4, when a new sub-directory is newly created under the directory, the sub-directory directory information, file management information, At least one of a part of the archive and the entire archive. 13. If the AV data recording device of the scope of patent application Nos. 1 to 4, in which the reservation range is ensured, a defect of the reservation range is detected. 2 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 52 divisions Γ… Α8 Β8 C8… J D8 VI. Patent application range block; when recording data in the reserved range, skip the defective block to record data. Installation ------ (Please read the notes on the back before transcribing this page) 14. If the AV data recording device in any of the items 1 to 4 of the scope of patent application, which is recorded on the disc At the time of data, when the remaining capacity of the reserved range area ensured beforehand is insufficient, it is ensured that a new reserved range different from the reserved range is recorded on the disc to record the data. 15. The AV data recording device according to any one of claims 1 to 4 of the scope of patent application, wherein when a thumbnail file containing thumbnail information about the AV file is recorded on the disc, it belongs to the reserved range Record the thumbnail file. 16. —A method of recording AV data, which has a process of recording an AV file on a disc or reproducing the recorded AV file; and a process of controlling the recording and reproduction method; It includes: range management information (disc On-chip continuous blocks are managed as ranges), file management information (range clustering is managed as files), and directory information (file clustering is managed as directories); it is characterized by being used to record The reservation range of the directory information, the file management information, a part of the file, and at least one of the entire file is secured. 17. The AV data recording method according to item 16 of the scope of patent application, in which the reservation range is recorded at least on the disc in advance to manage the position and capacity on the disc. 18. If the AV data recording method of item 16 of the scope of patent application is applied, the reserved scope is ensured in the form of assigned completion scope. 3 This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 52641iiZ 4, n A8 B8 C8 6. Application for patent scope 19. If the AV data recording method for item 17 of the patent scope is applied, an appointment will be made The scope is ensured in the form of assigned completion scopes. (Please read the precautions on the reverse side before writing this page) 20. If the AV data is recorded in any of the 16th to 19th of the scope of patent application, the method is to record the file management information of the file in advance. Ensure the appointment range. 21. The AV data recording method according to any one of claims 16 to 19 of the scope of patent application, wherein when recording a file on a disc, attribute information about the AV file is recorded in the reserved range. 22. The AV data recording method according to the scope of patent application No. 21, wherein the attribute information about the AV file is a range forming a part of the AV file. 23. As for the AV data recording method in the scope of patent application No. 21, the attribute information about the AV file is a part or all of the file that is different from the AV file. 24. If the AV data recording method according to item 21 of the patent application range, wherein the AV file is an MPEG transport stream, the attribute information about the AV file recorded in the reserved range includes the time mapping information of the transport stream. 25. The AV data recording method according to item 21 of the scope of patent application, wherein the AV file is an Exif image file, and the attribute information about the AV file recorded in the reserved range is a part of the Exif image file. Exif extensions. 26. If the AV data recording method of any one of the 16th to 19th of the scope of patent application is applied, when a new subdirectory is created under this directory, it will be used to record 4 paper standards applicable to Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) 526477Γ Second,: k. Α8 Β8 C8: D8 VI. Patent application scope Record the file management information of the file made under the hierarchy of the subdirectory, a part of the file, and the file A new appointment range for at least one of the entire group is secured. 27. The AV data recording method according to any one of claims 16 to 19 of the scope of patent application, wherein when a new subdirectory is created under the directory, the directory information, file management information, At least one of a part of the archive and the entire archive. 28. If you apply for AV data recording method in the range of 16 to 19 of the patent application, where the reserved range is ensured, the defective block of the reserved range is detected; when recording the data in the reserved range, it is skipped The defective block is used to record information. 29. If the AV data recording method according to any one of claims 16 to 19 is applied for, when recording data on the disc, if the remaining capacity of the reserved range area which is ensured in advance is insufficient, the disc is recorded on the disc. Make sure to record the data on a new appointment range that is different from the appointment range. 30. The AV data recording method according to any one of claims 16 to 19 of the scope of patent application, wherein when a thumbnail file containing thumbnail information about the AV file is recorded on the disc, it is within the reserved range Record this thumbnail file 〇31. —The disc is recorded by the AV data recording device in the first patent application scope. 32. — Seed discs are recorded by the AV data recording method in the 16th patent application. 5 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) --------------------------- Package- ---- (Please read the notes on the back before transcribing this page), 1T: